Don't generate jump for last when condition

compiler/testData/codegen/bytecodeText/disabledOptimizations/noJumpInLastBranch.kt

@@ -0,0 +1,17 @@
+// KOTLIN_CONFIGURATION_FLAGS: +JVM.DISABLE_OPTIMIZATION
+
+fun consume(i: Int) {}
+
+fun foo(a: String) {
+    var b = 1
+    if (a[1] == 'b') {
+        b = 2
+    } else if (a[0] == 'a') {
+        b = 3
+    }
+
+    consume(b)
+}
+
+// 1 GOTO
+// 2 IF

compiler/testData/codegen/bytecodeText/disabledOptimizations/noJumpInSingleBranch.kt

@@ -0,0 +1,15 @@
+// KOTLIN_CONFIGURATION_FLAGS: +JVM.DISABLE_OPTIMIZATION
+
+fun consume(i: Int) {}
+
+fun foo(a: Boolean) {
+    var b = 1
+    if (a) {
+        b = 2
+    }
+
+    consume(b)
+}
+
+// 0 GOTO
+// 1 IF